Barrow, Isaac, Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur

Table of contents

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[31.] Lect. IV.
Page: 222 (29)
[32.] Lect. VII.
Page: 249 (56)
[33.] Lect. VIII.
Page: 256 (63)
[34.] Lect. IX.
Page: 263 (70)
[35.] Lect. X.
Page: 268 (75)
[36.] Exemp. I.
Page: 274 (81)
[37.] _Exemp_. II.
Page: 275 (82)
[38.] _Exemp_. III
Page: 275 (82)
[39.] Exemp. IV.
Page: 276 (83)
[40.] Eæemp. V.
Page: 277 (84)
[41.] Lect. XI.
Page: 278 (85)
[42.] APPENDICUL A.
Page: 287 (94)
[43.] Lect. XII.
Page: 298 (105)
[44.] APPENDICULA 1.
Page: 303 (110)
[45.] Præparatio Communis.
Page: 303 (110)
[46.] APPENDICULA 2.
Page: 308 (115)
[47.] Conicorum Superſicies dimetiendi Metbodus.
Page: 310 (117)
[48.] Exemplum.
Page: 311 (118)
[49.] Prop. 1.
Page: 312 (119)
[50.] Prop. 2.
Page: 312 (119)
[51.] Prop. 3.
Page: 313 (120)
[52.] Prop. 4.
Page: 313 (120)
[53.] APPENDICULA 3.
Page: 314 (121)
[54.] Problema I.
Page: 314 (121)
[55.] Exemp. I.
Page: 314 (121)
[56.] Exemp. II.
Page: 315 (122)
[57.] Probl. II.
Page: 315 (122)
[58.] Exemp. I.
Page: 315 (122)
[59.] _Exemp_. II.
Page: 316 (123)
[60.] _Probl_. III.
Page: 316 (123)
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            <emph style="sc">Lect.</emph>
          XVI.</head>
          <p>
            <s xml:id="echoid-s7358" xml:space="preserve">I. </s>
            <s xml:id="echoid-s7359" xml:space="preserve">P_Unctorum ex inflectione determinatis apparentibus locis,_ con-
              <lb/>
            quieſcere poſſem; </s>
            <s xml:id="echoid-s7360" xml:space="preserve">ſiquidem exinde magnitudinum apparentiæ
              <lb/>
            deducuntur, quotlibet in ipſis exiſtentium punctorum imagines de-
              <lb/>
            ſignando. </s>
            <s xml:id="echoid-s7361" xml:space="preserve">cæterùm nè juſto parciùs in hac parte, vel illiberaliùs egiſſe
              <lb/>
            videar, etiam _de rectarum linearum (conſequenter & </s>
            <s xml:id="echoid-s7362" xml:space="preserve">planarum ſuper-_
              <lb/>
            _ficierum, quibus diſtinctè viſui repræſentandis natur a præcipuè conſu-_
              <lb/>
            _luiſſe videtur) apparentiis & </s>
            <s xml:id="echoid-s7363" xml:space="preserve">imaginibus expreſſiora ſpecimina quædam_
              <lb/>
            _haud gravabor adnectere._ </s>
            <s xml:id="echoid-s7364" xml:space="preserve">de quibus etiam circa reliquarum magnitu-
              <lb/>
            dinum apparentias propius ac promptius fiat judicium.</s>
            <s xml:id="echoid-s7365" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7366" xml:space="preserve">II. </s>
            <s xml:id="echoid-s7367" xml:space="preserve">Notetur autem imprimìs; </s>
            <s xml:id="echoid-s7368" xml:space="preserve">Sicuti (quod ſæpiùs in antedictis
              <lb/>
            habetur inſinuatum) cujuſque puncti quodammodò duplex eſt imago;
              <lb/>
            </s>
            <s xml:id="echoid-s7369" xml:space="preserve">una ſimplex, abſoluta, principalis; </s>
            <s xml:id="echoid-s7370" xml:space="preserve">illa ſcilicet, quæ in recta verſatur
              <lb/>
            ad ſuperficiem inflectentem perpendiculari, perque radians punctum
              <lb/>
            ſimul ac oculi centrum tranſeunte (hoc eſt in communi lucidæ radia-
              <lb/>
            tionis, ſuperficiei reflectentis, ipſiúſque viſionis axe) altera verò
              <lb/>
            relata, mutabilis, ac minùs præcipua; </s>
            <s xml:id="echoid-s7371" xml:space="preserve">quæ talis eſt reſpectu oculi
              <lb/>
            extra rectam inflectenti ſuperficiei perpendicularem arbitrariè conſti-
              <lb/>
            tuti; </s>
            <s xml:id="echoid-s7372" xml:space="preserve">ità pari fermè modo duplex cujuſque magnitudinis imago con-
              <lb/>
            cipi poteſt; </s>
            <s xml:id="echoid-s7373" xml:space="preserve">una quidem abſoluta (quam ſaltem hoc nomine deſig-
              <lb/>
            nabo) quæ ex punctorum ſingulorum in ipſa exiſtentium abſolutis
              <lb/>
            imaginibus quaſi conflatur, illas ſaltem comprehendit (qualis in ob-
              <lb/>
            jecta congrua ſuperficie vividè deformaretur; </s>
            <s xml:id="echoid-s7374" xml:space="preserve">qualíſque videretur
              <lb/>
            oculo ad infinitam ab inflectente ſuperficie diſtantiam ritè collocato)
              <lb/>
            altera verò relata, quæ oculum reſpicit ubivis in certa poſitione con-
              <lb/>
            ſtitutum; </s>
            <s xml:id="echoid-s7375" xml:space="preserve">quid velim, & </s>
            <s xml:id="echoid-s7376" xml:space="preserve">quare ſic diſtinguam ab exemplis benè mul-
              <lb/>
            tis in decurſu proponendis luculenter apparebit.</s>
            <s xml:id="echoid-s7377" xml:space="preserve"/>
          </p>
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